"""
字符串格式化
"""

class_num = 57
message = "xxxxxxxxxxxxx %s" % class_num
print(message)

class_num = 57
class_num2 = 58
message = "xxxxxxxxxxxxx %sxxxxxx%s" % (class_num, class_num2)
print(message)

# 精度控制  m.n
# f {}
name = "李四"
age = 19
cont = 4
print(f"我是{name},{age}岁,大学{cont}")

name = "李四"
age = 19
cont = 4
print(f"我是{name},{age}岁,大学{cont}")

# 输入
name = input()
print("我知道了，你是：%s" % name)

# 判断语句
##  ==  ！=  >  <   >=  <=
result = 10 > 5
if result:
    print("hjjj")
    print("hjjj2")
    print("hjjj3")
else:
    print("xxx")
print("xxxxxxxxxxxxx123")